I ate noodles the day before my colonoscopy should I cancel it?

Wasn't clear liquid. Your question is best directed to the doctor who prescribed your prep and will be performing your procedure. Call the after-hours doctor with your question, if the office is closed. That being said, many patients have difficulty with their preparation before colonoscopy, but the best yield from the test derives from the quality of the preparation you provide your doctor. Good luck with your exam.